I can't launch adis16507_example.py of the pyadi-iio project

Are you running Kuiper Linux or something else? If something else do you have iiod running?

-Travis

I'm working on a Raspberry pi4 with Ubuntu 22.04 on which I have plugged my imu.

$ uname -a

Linux ubuntu 5.15.0-1016-raspi #18-Ubuntu SMP PREEMPT Wed Sep 28 12:15:55 UTC 2022 aarch64 aarch64 aarch64 GNU/Linux

I have nothing else connected.

Here is the version of iiod that I have:

$ iiod -V

0.24

However I am a beginner. Is there a step to do with iiod before launching the .py with python?

iiod needs to be running if you want to use the IP context which the demo defaults to.  So you can:

1. Change the context from ip:analog to local:

2. Start iiod before running the example.

-Travis

Thanks for your advice.

I launch iiod this way:

$ iiod

Starting IIO Daemon version 0.24.cee2d136
IPv6 support enabled
Attempting to start Avahi
ERROR: host ubuntu
Avahi: Started.

Then I run python3 adis16507_example.py in uri="local"

Traceback (most recent call last):
  File "/usr/local/lib/python3.10/dist-packages/pyadi_iio-0.0.14-py3.10.egg/adi/context_manager.py", line 65, in __init__
  File "/usr/local/lib/python3.10/dist-packages/pylibiio-0.23.1-py3.10.egg/iio.py", line 1358, in __init__
    self._context = _new_uri(_context.encode("ascii"))
  File "/usr/local/lib/python3.10/dist-packages/pylibiio-0.23.1-py3.10.egg/iio.py", line 56, in _check_null
    raise OSError(err, _strerror(err))
OSError: [Errno 38] Function not implemented

During handling of the above exception, another exception occurred:

Traceback (most recent call last):
  File "/home/pi/pyadi-iio/examples/adis16507_example.py", line 40, in <module>
    imu = adi.adis16507(uri="local")
  File "/usr/local/lib/python3.10/dist-packages/pyadi_iio-0.0.14-py3.10.egg/adi/adis16507.py", line 59, in __init__
  File "/usr/local/lib/python3.10/dist-packages/pyadi_iio-0.0.14-py3.10.egg/adi/context_manager.py", line 67, in __init__
Exception: No device found

The error changes slightly but it still doesn't work 

Sorry if I didn’t explain it better but I meant you could do one or the other. If you use the local context you don’t need iiod.

However, if you want to run iiod I would recommend installing it as a service. See the CMake params here https://github.com/analogdevicesinc/libiio/blob/master/README_BUILD.md you probably want systemd with Ubuntu. For the local context you missed the colon. It should be local: and not local.

-Travis

Okay, thanks, I got it. I used in my case the "local:" version 

$ python3 adis16507_example.py

Traceback (most recent call last):
  File "/home/pi/pyadi-iio/examples/adis16507_example.py", line 40, in <module>
    imu = adi.adis16507(uri="local:")
  File "/usr/local/lib/python3.10/dist-packages/pyadi_iio-0.0.14-py3.10.egg/adi/adis16507.py", line 65, in __init__
AttributeError: 'NoneType' object has no attribute '_set_trigger'

The error is different but I don't understand how to fix it.

Thank you very much for your help.

The adis16507 class assumes certain driver names: https://github.com/analogdevicesinc/pyadi-iio/blob/master/adi/adis16507.py#L56

If they are different on your platform you will need to update them. There is no real way for pyadi-iio to do this automatically since the driver names are arbitrary,

-Travis

Yes, I did pay attention to that. I put the following names:

cat /sys/bus/iio/devices/iio\:device0/name

adis16507-1

$ cat /sys/bus/iio/devices/trigger0/name

adis16507-1-dev0

So my file /pyadi-iio/adi/adis16507.py:

        self, uri="", imu_dev_name="adis16507-1", trigger_name="adis16507-1-dev0"

Are you still getting the error? The error "AttributeError: 'NoneType' object has no attribute '_set_trigger'" basically means it cannot find the related device "adis16507-1". If this is still the case can you run in python:

import iio

ctx = iio.Context("local:")

dev = ctx.find_device("adis16507-1")

assert dev

for chan in dev.channels:
    print(chan.id)

-Travis

I ran it and it works without error:

$ python3 test
accel_x
accel_y
accel_z
anglvel_x
anglvel_y
anglvel_z
temp0
timestamp